Filter



. ticular construction of the improved ter,'-

UNITED STATES PATENT OFFICE.

HENRY J. FREY, 0F PALMYRA, MISSOURI.

FILTER.

To all whom it may concern:

Be it known that I, HENRY J. FREY, a citizen of the United States, residing at Palmyra, in the county of Marionand State of Missouri, have invented new and useful Improvements in Filters, of which the following is a specification.

This invention relates to filters, the main object of the invention being to produce a filter for the purpose of filtering rain water on its passage or fall from the roof'of a or other structure to acistern orbuilding reservoir by causing the water to pass through a body of filtering material such as gravel, sand, or the like, of any degree of coarseness. The filter is so constructed that the water must pass not only in a downward direction but also 'in an upward direction through the filtering material, so that the force of gravity will assist in purifying the water by retaining at the bottom of the filter body or casing, any kind of filth heavier thanwater, instead of helping to .carry the same along through the filter, as

is the case when the water moves in a down ward direction only. kind of filtering material, particularly sand, no inatter how fine, may be used, by reason of the arwithout too greatly retarding the flow of water and without liabilityjof the sand or finer particles being carried into the cistern or reservoir, as in the case of the filter employing a bottom screen or strainer.

With the above and other objects in view,

the invention consists in the construction,

' combination and arrangement of parts, as

herein described, illustrated and claimed.

, In the accompanying drawings; I Figure l is a vertical diametrical section through the improved'filter. v v

Fig. 2 is a horizontal section through the same.

In the preferred embodiment of the invention, I employ a casing or filter body.1 of hollow cylindrical formation and of any suitable height and diameter, said casing being preferably formed of sheet metal and comprising a cylindrical side wall 2, a bot-. tom-wall 3 and a top wall 4, which may be provided with an annular depending cap or flange ,5, so that it may be detachably fitted upon the top of the main body of the casing or form a displaceable top wall to give access to the interior of the casing.

Specification of Letters Patent.

Patented Feb. 3, 1920.

Application filed July 30, 1918. Serial No. 247,373;

Extending through the top wall of the casmg is the upper section of a downspout 6 which in the case of a house or dwelling will extend from the roof guttering downwardly to the filter. 'The downspout section. extends .well downwardly into the casing 1 and before reaching the bottom wall 3 of the casing, the lower end of the downspout section 6-is flared and considerably enlarged to form a frusto-conical discharge end portion 7. The bottom edge 8 of said frusto-conical portion of the downspout section '6 is located andsupported a considerable distance above the floor or bottom edge of the casing by legs or'upright bracket pieces 8 and the space below said bottom edge is closed by means of. an annular strainer 9 preferably formed of meshed wire fabric of any suitable gage. The strainer is detachably placed about and held in position by the legs and may be readily removed for the the filter. 4 it v Arranged at one side of the center of the casing 1 and preferably adjacent to the purpose of I cleaning out peripheral wall of said casing is a lowerdownspout section 10 which terminates at its upper end above the filtering material, the level of which is indicated at 12. The downspout section 10 extends through the bottom of the casing and projects below the same as shown at 13,'it being intended to lead said downspout section 10 to the cistern or reservoir to receive the filter water.

In order to allow all water to drain from the outlet or causing regurgitation or theortion 7 of the downdischarge of the water unevenly or'in jets or I streams of a force liable to displace and compact or otherwise disturb the denslty or uniformity of distribution of the mass of filtering material. Thus objections of this character inherent in the use of a downspout having a restrlcted outlet or one of 1 material may throughout the base of the owing to thesmaller diameter of the uniform diameter therewith are avoided. Also by this construction coarse filtering low the level of the upper end of the outlet 7 for the rapid distribution of the water chamber 2, while,

downs out section 6, greater space is afforded hove the level of the portion? to receive a large amount of fine screen material in the upper ortion of the chamber 2, this being desirab e to secure efliciency and rapidity in the filtering action, owing to the fact that as the fine material filters more slowly than the coarse a greater area of surface for the fine material is required in order to make the filter work fast enough. The portion 7 is also advantageous in that it acts as an overhead shield for the screen 9, preventing the filtering material from packing down and around the screen and interfering with its proper operation. The construction further rovides for the convenient use of a remova ble screen, as previously described.

I claim:

1. In a filter, the combination of a casing adapted to contain filtering material, an upper downspout section extending through the top of said casing, said downspout seotion having an enlarged frusto-conical lower end portion located in superposed and spaced relation to the floor of said casing, an annular strainer of greater diameter than the main body of said downspout extending from the peripheral edge of the frustoconi- 1 cal end portion of said downspout section to the floor of the casing, alower downspout section extending through the bottom of the casing and terminating at its upper end below the top of said casing, and a body of filtering material supported by the floor of the casing and extendmg around and above the frusto-conical portion of the upper be used in the chamber 2 be--v downspout section, and also around said strainer.

2. In a filter, the combination of a casinglarged frusto-conical lower end portion located in superposed and spaced relation to the floor of said casing, an annular strainer of greater diameter than the main body of said downspout extending from the lower extremity of said downspout section to the floor of the casing, a lower downspout section extending through the bottom of the casing and terminating at its upper end be low the top of said casing, a body of filtering material supported by the floor of the casing and extending around and above the frusto-conical portion of the upper downspout section, and also around said strainer, and supporting legs on the upper downspout section for supporting the bottom end thereof in spaced relation to the floor of the casing, said strainer being detachably placed about and held in position by the legs.

3. In a filter, the combination of a casing adapted to contain filtering material, an upper downspout section extending through the top of said casing, said downspout section having an expanded frusto-conical lower end terminating above the bottom of the casing, a strainer inclosing the space between the bottom of the casing and lower peripheral edge of said frusto-conical lower end of the upper downspout section, an outlet for the discharge of the filtered water from the casing above the level of the filtering material, said strainer and frusto-conibeing arranged in the filtering chamber and surrounded by the filtering material.

In testimony whereof I affix my signature.

HENRY J. FREY.

.cal expanded end of the upper downspout 

